Everyone says London is amazing, it's bustling and it's incredibly expensive. We can all agree on those points. I've been to London about 20-something times because I freakin' love the place (obviously). But I've also mastered spending a lot of time here without spending a sh*t ton of cash. There's plenty of cheap, if not free things to do in London! So without further a due, here are 15 things you can do in London for under £5!